This was such a fun game and a really unique idea. I have not seen many squash videogames but after playing this is would definitely love a fully-fledged online squash game haha. Some points I would like to make would be that it did take me quite a while to get the hang of it. I think it actually took me about 3 games before I successfully managed to hit the ball. I'm not sure how you implemented the mechanic for hitting the ball but perhaps adjusting the range for what counts as a successful hit could be a good idea. You could even change the range depending on the difficulty and maybe keep what you have currently for the harder difficulty. One other thing is that I encountered a glitch two times where the AI would not serve and I needed to refresh the page to start the game again. An amazing game overall!